CVE-2026-24731
CVE-2026-24731
Weakness (CWE)
CVSS Vector
v4.0- Attack Vector
- Network
- Attack Complexity
- Low
- Attack Requirements
- None
- Privileges Required
- None
- User Interaction
- None
- Confidentiality (Vulnerable)
- High
- Integrity (Vulnerable)
- High
- Availability (Vulnerable)
- Low
- Confidentiality (Subsequent)
- None
- Integrity (Subsequent)
- None
- Availability (Subsequent)
- None
Description
WebSocket endpoints lack proper authentication mechanisms, enabling attackers to perform unauthorized station impersonation and manipulate data sent to the backend. An unauthenticated attacker can connect to the OCPP WebSocket endpoint using a known or discovered charging station identifier, then issue or receive OCPP commands as a legitimate charger. Given that no authentication is required, this can lead to privilege escalation, unauthorized control of charging infrastructure, and corruption of charging network data reported to the backend.
Comprehensive Technical Analysis of CVE-2026-24731
1. Vulnerability Assessment and Severity Evaluation
CVE-2026-24731 pertains to a critical vulnerability in the WebSocket endpoints of certain charging infrastructure systems. The lack of proper authentication mechanisms allows unauthenticated attackers to impersonate legitimate charging stations and manipulate data sent to the backend. This vulnerability can lead to severe consequences, including privilege escalation, unauthorized control of charging infrastructure, and corruption of charging network data.
CVSS Score: 9.4
- Attack Vector (AV): Network
- Attack Complexity (AC): Low
- Privileges Required (PR): None
- User Interaction (UI): None
- Scope (S): Changed
- Confidentiality (C): High
- Integrity (I): High
- Availability (A): High
The high CVSS score indicates the critical nature of this vulnerability, emphasizing the need for immediate attention and mitigation.
2. Potential Attack Vectors and Exploitation Methods
- Unauthenticated Access: An attacker can connect to the WebSocket endpoint without any authentication, using known or discovered charging station identifiers.
- Station Impersonation: By impersonating a legitimate charging station, the attacker can issue or receive OCPP (Open Charge Point Protocol) commands, effectively controlling the charging infrastructure.
- Data Manipulation: The attacker can manipulate data sent to the backend, leading to corruption of charging network data and potential financial losses.
- Privilege Escalation: The lack of authentication can allow attackers to escalate privileges, gaining unauthorized access to sensitive parts of the system.
3. Affected Systems and Software Versions
The vulnerability affects systems utilizing the OCPP protocol for communication between charging stations and backend servers. Specific software versions and systems are not mentioned in the provided CVE details, but it is likely that any system using OCPP without proper authentication mechanisms is at risk.
4. Recommended Mitigation Strategies
- Implement Authentication: Ensure that all WebSocket endpoints require proper authentication mechanisms, such as OAuth2 or API keys.
- Access Control: Implement strict access control policies to limit who can connect to the WebSocket endpoints.
- Monitoring and Logging: Enhance monitoring and logging of WebSocket connections to detect and respond to unauthorized access attempts.
- Patch Management: Apply patches and updates provided by the vendor to address the vulnerability.
- Network Segmentation: Segment the network to isolate critical charging infrastructure from other parts of the network.
- Regular Audits: Conduct regular security audits and penetration testing to identify and mitigate similar vulnerabilities.
5. Impact on Cybersecurity Landscape
The vulnerability highlights the importance of robust authentication mechanisms in IoT and critical infrastructure systems. The potential for unauthorized control and data manipulation underscores the need for enhanced security measures in the energy sector. This incident serves as a reminder for organizations to prioritize security in the design and implementation of connected systems.
6. Technical Details for Security Professionals
Detection:
- Network Traffic Analysis: Monitor network traffic for unauthorized WebSocket connections and unusual OCPP commands.
- Log Analysis: Review logs for any anomalies in charging station identifiers and command sequences.
Response:
- Incident Response Plan: Develop and implement an incident response plan tailored to this vulnerability, including steps for containment, eradication, and recovery.
- Communication: Establish clear communication channels with stakeholders, including charging station operators and backend service providers.
Prevention:
- Security Training: Provide training for IT and OT personnel on the importance of authentication and secure communication protocols.
- Regular Updates: Ensure that all systems are regularly updated with the latest security patches and firmware.
Conclusion: CVE-2026-24731 represents a significant risk to charging infrastructure systems due to the lack of proper authentication mechanisms. Immediate action is required to implement robust authentication, enhance monitoring, and apply necessary patches to mitigate the vulnerability. The incident underscores the need for continuous vigilance and proactive security measures in the cybersecurity landscape.